Donnerstag, 13. November 2008

Rspec installation

>sudo gem install ZenTest
>sudo gem install rspec-rails

in application root:
>ruby script/generate rspec

autotest (if it hangs use >RSPEC=true autotest)

rake spec
rake spec:app

rake spec:models
rake spec:controllers
rake spec:views
rake spec:helpers
rake spec:plugins
rake --tasks:plugins

Freitag, 7. November 2008

Compare time

module ApplicationHelper
..SOMETIME_FORMAT = "%a %b %d %H:%M:%S %z %Y"
..SOMETIME_FORMAT_DB = '%Y-%m-%d %H:%M:%S'

..def sometime_this_month(time, format='user')
....return time.beginning_of_month.strftime(SOMETIME_FORMAT) if format == 'user'
....return time.beginning_of_month.strftime(SOMETIME_FORMAT_DB) if format == 'db'

..def sometime_today(time, format='user')
....return time.beginning_of_day.strftime(SOMETIME_FORMAT) if format == 'user'
....return time.beginning_of_day.strftime(SOMETIME_FORMAT_DB) if format == 'db'


Time based finds.

created_at time from the database is: "2008-10-24 22:06:18 +0200"

However retrieving the results in the format as follows: "Fri Nov 07 15:31:56 +0100 2008"


Named scope with variables

in model *.rb (in this case weight_meassurements.rb)

named_scope :user_weight_meassurements, lambda { |user_id| { :order => 'created_at DESC', :conditions => ["user_id == ?", user_id] } }

named_scope :today, lambda { |today| { :conditions => ["created_at > ?", today] } }

Calling from the controllers or helpers'2008-11-07 00:00:00') wil retrieve all weight_meassurement record belonging to the user created after midnight of the passed date.

You can also call WeightMeassurements.user_weight_meassurements( for all this user weight meassurement records.